1B voorbereiding op het practicum

• Natuurkunde / Scheikunde
• Middelbare school
• vwo
• Leerjaar 1

Lesson plan

• About the practical
• Measuring volume
• Measuring density
• Calcualting density
• Doing exercises

Goals

• Understanding what to do at the practical
• to know how to measure volume
• To know how to measure mass
• To know how to calculat density

The practical

The practical

Date: Monday january 21st

Materials you need: 

• A protractor (geodriehoek)
• A calculator

The practical

What do you have to know?

• How to measure volume
• How to measure mass
• How to calculate density

Measuring mass

Measuring volume

V​cylinder​​=π⋅r​2​​⋅H

Measuring volume

Calculating density

Cylinder

m = 565,4 g

V = 1271,7 cm³

Plier

m = 231,5 g 

V = 60 cm3

Density

Density: the amount of mass per unit of volume – kg/m3, g/cm3

Mass: the amount of matter in an object – unit: kg, g

Volume: The amount of space an object takes in – Unit: m3, cm3 , L, mL

• 1 L = 0,001 m3
• 1 mL = 1 cm3

Denisty=​Volume​​mass​​

ρ=​V​​m​​

(3=​2​​6​​)

Checking the goals

How do you measure mass?

How do you determine the volume of...

• A cuboide?
• A cylinder?
• An irregular object?

Measuring mass: use a scale

Determining volume:

• cube or cuboid —> length x width x height
• Volume Cylinder —>    
• Irregular shaped object —> use a measuring cylinder

π⋅radius​2​​⋅height

rewrite the formula

ρ=​V​​m​​

V=...

m=...

ρ=​V​​m​​

V=​ρ​​m​​

m=ρ⋅V

Any questions about 

the practical?